Carriage position control means for



Filed Feb. 23, 1951 CARR F. w. PFLEGER E POSITION CONTROL MEANS FORACCUMULATION PRODUCTS AROUND A FIXED DECIMAL POINT 8 Sheets-Sheet l J90D0 0: I] BFUC'D |:1 n69 a 00 El U0 E1 k D El D It. I

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CARRIAGE POSITION CONTROL MEANS FOR ACCUMULATION OF PRODUCTS AROUND AFIXED DECIMAL POINT Filed Feb. 2;, 1951 8 Sheets-Sheet 2 (Ittorueg2,645,422 UMULATION u y 1 1953 P. w. PFLEGER CARRIAGE POSITION CONTROLMEANS FOR ACC OF PRODUCTS AROUND A FIXED DECIMAL POINT Filed Feb. 23,1951 8 $heets=$heet 5 Nb 3 a 9 Zhwentor FREDERICK m PFLEGER F. w.PFLEGER 2,645,422 CARRIAGE POSITION CONTROL MEANS FOR ACCUMULATION 0FPRODUCTS AROUND A FIXED DECIMAL POINT Filed Feb. 23, 1951 8 Sheets-Sheet4 ZSnnentor I FREDERICK W PFLEGER July 14, 1953 F. w. PFLEGER ,6CARRIAGE POSITION CONTROL MEANS FOR ACCUMULATION I. 0F PRODUCTS AROUND AFIXED DEGIMAL POINT Filed Feb. 25, 1951 8 Sheets-Shae: 5

Bnvcntor FPE'DER/CK I4. PFLEGER Gttomeu.

July 14, 1953 P. w. PFLEGER 2,

CARRIAGE POSITION CONTROL MEANS FOR ACCUMULATION OF PRODUCTS AROUND AFIXED DECIMAL POINT Filed Feb. 23, 1951 8 Sheets-Sheet 6.

Fla. 6

I532 J x Zmventor FREDERICK K. PFLEGER Gttorneg y F. 'w. PFLEGER2,645,422

CARRIAGE POSITIQN CONTROL MEANS FOR ACCUMULATION OF PRODUCTS AROUND AFIXED DECIMAL POINT Filed Feb. 23, 1951 l'lfllll FIG. 8

'/00 Zmnentor FREDERICK M PFLEGER F. w. PFLEG? 2,645, CARRIAGE POSITIONCONTROL MEAN FOR ACCUMULATION July 14, 1953 OF- PRODUCTS AROUND A FIXEDDECIMAL POINT Filed Feb, 23, 1951 4 v 8 Sheets-Sheet 8 m5. n? mm p 3nver1tor FREDERICK W PFLEGER (Ittorneg fiatentecl July 14, 19%.?

, ACCUMULATION OF PRODUCTS AROUND A FIXED DECIMAL POINT Frederick W.Pfleger, West Orange, N. J assignor' to Monroe Calculating MachineCompany, Orange, N. J., a corporation of Delaware Application February23, 1951, Serial N 0. 212,215

s 11 Claims. (Cl.-23563) The invention relates to carriage positioncontrol means for calculating machines: -More particularly, theinvention relates to control means whereby a shiftable register carriageis automatically positioned for each of a series of calculationsrespectively, in ordinal. relation to values set in factor selectionmeans, so that the sum of the calculations will be accumulated in theregister.

The invention is particularly adaptable for use in conjunction withmultiplying mechanism of the ten key multiplier type in a full keyboardmachine. In such a machine, the multiplicand is set in the keyboard anda selected series of the multiplier keys are sequentially depressed. The

product register is mounted in a shiftable carriage and the product isregistered therein by differential actuating mechanism which is set inaccordance with the values set in the keyboard. The actuating mechanismis cycled in accordance with the value of a depressed multiplier key 1to 9, followed by a one ordinal'shift of the register carriage; or'upondepression of thezero multiplier key one ordinal shift of the carriageis effected without registration. Thus, registration andcarriage shiftis effected upon depression of the selected series of. multiplier keysthereby accumulating the product in the register. Multiplying mechanismof the above noted type may be adapted to provide for the sequentialdepression of the selected multiplier keys from higher to lower ordersor vice versa with ordinal shifting of the product register carriage tothe left or right respectively. The selected multiplier keys, however,have no ordinal relation to the multiplicand set in the keyboard.Therefore when the sum of the products of a series of multiplyingoperations is to be accumu1ated, it is often necessary to begin theseveral operations with the register carriage in difierent ordinalpositions to correctly relate the productregister to the multiplicandset in the keyboard. This results in loss of time and involvesconsiderable mental calculation by the operator. 7

It is much easier to depress the multiplier keys sequentially from thehigher to the lower orders which operation conforms with the readingofthe multiplier. Obviously, a series of whole num ber multipliers willalmost invariably include numbers consisting of varying numbers ofdigits; thus precluding the starting of each of. the operations with thecarriage in the same ordinal position. The following simple examplewherein the is to be accumulated will be illustrative:

With 24 set in the keyboard and the carriage in a given position,upondepression of the21nultiplier key, the product 48 will beregistered. If the second calculation is started with the carriage inthe same given position and the multiplicand retained on the keyboard inthe same position the registration will be as follows:

which is obviously the incorrect sum of the products. If, however, thesecond calculation is started with the carriage one ordinal position tothe right of the given position, the registrations will be as follows:

which is the correct sum of the two products.

If the ten key multiplying mechanism is adapted for depression of themultiplier keys from to higher orders and the several multiplierscomprise whole numbers only, as in the above example, the severalcalculations may be started with the carriage in the same position.However,

should decimals and whole numbers or decimals with varying numbers ofdigits be included in the multipliers, it will be necessary to locatethe carriage in different ordinal positions as illustrated in theforegoing example. Therefore, regardless of whether the left or rightshift method is employed, in certain instances, it will be necessary forthe operator to mentally determine the proper location of the carriageand to locate it by manipulation of either the zero multiplier key or ofa shift key prior to depression of the significant digit multiplierkeys.

The present invention in a ten key multiplying machine permits thetabulation of the carriage to the same predetermined position before thestart of each of a series of multiplying operations. Then, withoutfurther consideration of the position of the carriage, the selectedmultiplier keys may be depressed and the successive products accumulatedin proper decimal relation.

The type of ten key multiplier machine to which the invention isparticularly adapted is fully disclosed in Patent No. 2,538,896 issuedto F. Britten, on January 23, 1951 and copending applications Ser. No.160,154, of Herman Gang, and Ser. No. 205,304, filed in my name onJanuary 10, 1951, which applications have been indicated as presentingpatentable subject matter. In such machines multiplier storage devicesare set in accordance with the depressed multiplier keys and thesettings are effected as rapidly as it is normally possible to depressthe keys. The multiplying operation normally is initiated upon settingof the first multiplier digit and it is unnecessary for the operator towait until completion of the registration which is controlled by onesetting before depression of the next multiplier key. Thus, the settingoperations may be effected simultaneously with registration and shift.

The devices of the invention include what may be termed a control ordecimal key which is adapted to supersede control of the initiation ofthe multiplying operations each of which is normally responsive to thedepression of the first multiplier key. If the multiplying operationsare effected with the left carriage shift, the carriage is returnedrightwardly to a given position and the multiplier keys are depressedfrom higher to lower orders. If the multiplier of the next calculationis or includes a whole number, de pression of the multiplier keysrepresentative of the whole number will each effect a one ordinal shiftof the carriage further to the right in addition to setting the digitsin the storage devices. The decimal key is then depressed to initiatethe multiplying operation with left carriage shift and then if there isa decimal in the multiplier the keys therefor are depressed, thuseffecting the normal operation of simultaneous setting and calculation.If a multiplier comprises only a decimal, the decimal key is firstdepressed, which operation conditions the machine for normal initiationof the multiplying operation upon depression of the first multiplierkey.

The invention has been disclosed as related to the control of mechanismsin a full keyboard ten multiplier type of machine which is constructedand operates in accordance with the disclosure of applicants aforesaidcopending application, Serial No. 205,304. Such mechanisms includemultiplier storage devices, setting means therefor, and registering andcarriage shifting means which are controlled by the set storage devices.The devices of the invention relate to tabulating means for the registercarriage, control of the carriage shifting means by the multiplier keysprior to initiation of the multiplying operations, and the controlsexercised by the aforenoted decimal key. Therefore, the operations ofthe various mechanisms will be described only in so far as related tothe devices of the invention and reference is made to said copendingapplication for the constructional operational details of the mechanismsnot specifically disclosed herein.

In the accompanying drawings illustrating the invention:

Fig. 1 is a plan view of a calculating machine embodying the invention;

Fig. 2 is a left side elevation of the machine showing the registrationcontrol means, the setting and indexing clutch, and certain of thecarriage position control devices:

Fig. 3 is a vertical section through the machine showing the registeringmechanism and the multiplier storage magazine;

Fig. t is a right side elevation of the machine 4 showing the carriageshift initiating means as related to the tabulating means;

Fig. 4a is a fragmentary detail elevation of certain parts of Fig. 4shown in an operated position;

Fig. 5 is a perspective view of the multiplier storage magaine andcontrols therefor;

Fig. 6 is a detailed fragmentary perspective of parts shown in Fig. 5associated with devices of the invention;

Fig. 7 is a longitudinal section through the multiplier storagemagazine;

Fig. 8 is a view taken on line 8-8 of Fig. '7 looking in "the direction-.of the arrows;

Fig. 8a is a view similar to Fig. 8 with the parts in another position;

Fig. 9 is a view taken on line 9-9 of Fig. 7 with the parts in theposition corresponding to the position of the parts shown in Fig. 8;

Fig. 9a is a view similar to Fig. 9 with the parts in the positioncorresponding to the position of the parts shown in Fig. 8a;

Fig. 10 is a fragmentary detailed front view of the tabulating keys andparts associated therewith;

Fig. 11 is a fragmentary top plan of the tabulating means shown in Fig.10;

Fig. 12 is a perspective of the carriage position control devices withcertain parts broken away and in exploded relationship.

Registering operation The product dividend register comprising thenumeral wheels I (Figs. 1 and 2) is mounted in the denominationallyshiftable carriage 2. Registration is effected on wheels I by cyclicallyoperable actuating mechanism comprising the differentially settableactuators 3 and the tens transfer actuators 4 (Figs. 2 and 3) which aremounted in the base of the machine. The differential actuators 3 are setby selector bails 5 in accordance with depressed settable numeral keys 6of the keyboard, thereby determining the value registered in wheels Iupon each cycle of operation of the actuating mechanism.

The differential actuators 3 and tens transfer actuators 4 are driven ata one to one ratio by a gear train I from the output gear 8 of thedifferential clutch mechanism 9 (Fig. 2). The differential clutchmechanism is constructed and transmits power from the motor I0 (Fig. 3)substantially in accordance with the disclosure of U. S. Patent No.1,566,560, issued to George C. Chase on December 22, 1925. Normally thegearing comprising both working legs of the differential drive rotateidly as described in the aforenoted patent and no movement istransmitted to output gear 8. However, interruption of the movement ofone of the legs will cause the planet ears to move in their orbit in onedirection accordingly rotating output gear 8 and interruption of themovement of the other leg will cause movement in the other direction andreverse rotation of output gear 8.

The working legs of the differential drive are selectively arrested bymeans of a reversing clutch lever II (Fig. 2) which is fulcrumed on themachine frame and settable to neutral, additiv and subtractivepositions. Clockwise movement of lever H will position it to additivesetting whereby a hook arm [2 of said lever will engage a lug 13 on gearl4 forming one leg of the difierential drive to interrupt its movement,thereby causing rotation of the output gear 8.

g. 'onversely, counterclockwisemovement will position the lever I I tosubtractive setting whereby a hook arm l thereof will engage a stop I6for the other leg of the differential to interrupt its movement andcause rotation of output gear 8 in the reverse direction. Full cyclestopping means for the actuating mechanism includes and operates inconjunction with parts identified in Fig. 2 by reference numerals 29,2|, 22, 25, 21, 28, 39, Si, 32, 33, 34 and 35 not directly referred toand described in the present description but corresponding to like partsidentically referenced and described in the aforenoted applicationCarriage shifting mechanism The carriage shifting mechanism isconstructed and operates substantially in accordance with the disclosureof U. S. Patent No. 1,964,478, issued to Austin A. Overbury on January26, 1934, to which reference is made for the structural details of themechanism and its operation.

A pair of reversely threaded Worms 4!) and 40a (Fig. 12) each providedwith a clutch. 4| and Ma respectively, are supported on a shaft 35 whichis rotatably mounted in the side frames to the rear of carriage 2. Theclutches are selectively engageable to connect the related worm toshaft36 which is driven by a gear train 31 (Fig. 2) from motor I9, therebyshifting the car.-

riage to the left or to the right respectively. Right and left shiftkeys 38 and 39 (Figs. 1 and 4) are operable to control the engagement ofthe shift clutches Ma and 4! respectively. The de vices of theinvention, however, have been disclosed as operating in conjunction withmultiplying mechanism wherein left shift clutch 4| is controlled throughindependent connections and wherein return carriage shift to the rightis initiated through a linkage which is common to the right shift key38. Therefore, control of the shifting mechanism in connection with theshift keys will be described only in connection with the linkage commonto the right shift key 38.

The shift clutches 4|, 4Ia are of wellknown construction wherein aspring urged pawl mounted on the driven member engage the driving memberto connect the drive. A control detent 42 for each shift clutch isnormally spring urged into engagement with the pawl of the relatedclutch to disengage said clutch and moved from engagement to permit thepawl to engage the clutch as hereinafter described. Shift worms 49, 40a,upon rotation, will engage a notched rail 43 (Figs. 3 and 12) which isfixed to the rear of carriage 2, thereby shifting said carriage onedecade to the left or to the right respectively upon each cycle ofrotation. Upon release, fromclutch engaging position, of a detent 42,the detent will be spring urged into engagement with the periphery ofthe related clutch and when the clutch completes its cycle of operationth detent will engage the clutch pawl to disconnect the drive, therebyterminating the shift.

Upon depression of right shift key 38, link I46 (Fig. 4) is moved towardthe front of the machine by engagement of crank I41 with crank I48 towhich the link is attached. However, link I46 and crank I49 may be movedindependently of crank I41 and key 38 as hereinafter described. Link I46is connected at its rear to a depending arm at the right end of a bailI49 which is rotatably mounted on a shaft I59 and the opposite end ofthe bail is integral with detent 42 of right shift clutch 4Ia. Thereforebail I49 and detent 6 42 will be rocked clockwise (Figs. 4 and 12) t6engage clutch 4m and upon release of the shift key the spring of thedetent will restore the parts to disengage the clutch.

Means are provided to positivelylocate carriag'e 2 in its shiftedposition. Such means comprises a linkage 44 connected with a bail leialso which is rotatably mounted on' shaft I50 and which underlies and isengaged by bail I49. The forward end of linkage 44 has connection with adepending arm of a ball 45 and a locating rod 46 (Figs. 2 and 12) isengaged at its forward end by an upstanding forked arm 45', ofsaid-bail.

Rod 46 extends toward the rear of the machine where its tapered free endnormally engages one of a series of notches in a rail 4i (Fig. 10) fixedacross the front of carriage 2. Upon clockwise movement of bail I49 toengage clutch em, bail I5I will likewise be moved, thereby moving bail45 counterclockwise through linkage, 44 to, move rod 46 from engagementwith the related notch of rail 41, thereby releasing the, carriage forthe shifting operation. Upon movement of detent 42 to terminate theshift, rod 46 will be moved into engagement with a notch of rail ll,thereby definitely locating the carriage in its shifted position. Thedetent 42 of left clutch 4! is integral with a bail also overlying bailISI, and bail 45 will therefore be operated in like manner to operaterod 46 in a left shift operation.

MaZtz'plier storage magazine and multiplication The product isregistered in product-dividend wheels (Fig. 3) by repeated addition ofth multiplicand which is set in the differential actuators 3 bydepression of keys 6 of the keyboard.

A substantially spool shaped multiplier storage magazine generallydesignated by" the reference numeral 43 (Figs. 3, 5, and 7) and devicesoperating in conjunction therewith control the program ofmultiplication, including the initiation thereof, the registering andcarriage shifting operations, and the termination ofthe program uponcompletion of the last registering and carriage shifting operations.

The storage magazine is axially fixed on shaft 49 which extendstransversely of the machine and i journaled adjacent its ends forrotation in the machine framing. The storage magazine includes aplurality of storage slides 54, each settable to digit representingpositions and to a zero position. The slides are equidistantly spacedabout the periphery of the magazine which is adapted to be indexed stepby step in counterclockwise direction (Figs. 3 and 5), thereby bringingthe slides successively into setting position. A setting and indexingclutch 58 (Fig. 2) is engaged for a single cycle of operation upondepression of any one of the digit value multiplier keys 5'! or the zerokey 56. During the first half cycle of clutch 53, the slide 50 which isin setting position is adjusted in accordance with the depressedmultiplier key and during the last half cycl of the clutch, magazine 43is indexed one step, thereby bringing another slide into settingposition.

A counting pawl 54 is rotatably mounted on shaft 49 with itsactive endin a plane a slight distance to the right of slides 59 when they areunset and is normally spring urged clockwise (Fig. 5) counterclockwise(Figs. 9 and 9a) to a home position. When in home position, pawl 54 islocated clockwise (Fig. 9) out of longitudinal alignment with the slide59 which is insetting position so that the slide may be set toward theaeeama f right (Fig. 7) without interference from the pawl. During apartial indexing step of magazine 48, upon depression of the firstmultiplier key in a program of multiplication, the slide 50 which hasbeen set during the first half cycle of clutch 58 will be moved fromsetting position into operating relation with pawl 54 which then will bemoved with the set slide from home position (Fig. 9a) as the magazinecompletes the indexing step of movement.

According to applicants disclosure of copending application, Serial No.205,304, upon movement of pawl 54 from home position, the program ofmultiplication will be initiated and counting pawl 54 will operate inconjunction with the aligned slide, if set to a position representativeof l to 9, to control registration which will be followed by a leftwardcarriage shift of one decade. If, however, the slide is set to a, zerorepresenting position, a contact member IIB of collar H6 (Figs. and 7)which is rotated in fixed relation with pawl 54 will, in conjunctionwith the slide, operate to effect a one decade carriage shift in lieu ofregistration and shift. The subsequent setting and indexing operationsupon successive depression of the multiplier keys may be effectedconcurrently with th registering and carriage shifting operationsincident of the calculation; pawl 54 and contact member II6 being movedwith the magazine as it is indexed. However, during the carriageshifting operation incident to the control of pawl 54 or member H6 inconjunction with the related slide, suitable escapement means areoperated to release pawl 54 and member IIS for one step of reversemovement and thus positioning it in operating relation with the next setslide 50. The calculation will continue until pawl 54 and member IIS'are reversely moved to the home position, at which time the productregistration will have been completed; or the calculation will have beeneffected more rapidly than the setting and indexing operations. Ineither instance, the multiplying operation will be concluded but will beresumed upon further setting and indexing operation and the consequentmovement of pawl 54 and member I I5 from home position.

A preferred embodiment of the present invention is disclosed as appliedto the afore briefly described multiplication control devices, fullydisclosed in applicants application, Serial No. 205,304 in which thedescription refers to parts identified by reference numerals 52, 52, 64,64a, 66, 66', I2, i3, 74, 15,16, 76a, 'iGb, ll, 18,19, 85, I05, I06,I07, I08, I09, IEO, H2, H3, iI3a, H4, H5, H1, H8, H9, I20, I24, I25,I28, I29, ISI, I32, I34, I34, I35, I36, I40, I42, I43, and I44 whichreference numerals are applied to like parts on the drawings of thepresent application but not directly referred to in the description. Thedevices of the present invention, as heretofore noted, provide carriageposition control devices operating in conjunction with the multiplierkeys prior to the initiation of a program of multiplication. Theinvention relates to the initiation of the program and the operationsperformed prior thereto. The storage of the multiplier digits and theprogram of multiplication per se, other than the initiation thereofbears no relation to the invention. Therefore, the devices of theaforenoted application will be described in detail only in connectionwith the initiation of a program of multiplication and the supersedingcontrol thereof as effected by the devices of the invention.

Multiplication (initiation of the operation) The zero and digit value 1to 9 multiplier keys, 56, 51 (Figs. 1 and 5) are arranged in sequencefrom left to right across the machine in front of the keyboard. Asheretofore noted, the setting and indexing clutch 55 (Fig. 2) is engagedfor a single cycle of operation upon depression of any one of themultiplier keys and the program of multiplication normally is initiatedas an incident to the first indexing operation.

Clutch 58 is of well known construction in which a spring urged pawlmounted on the driven member of the clutch is engaged by a detent 59 todisengage the clutch. The clutch is engaged by movement of the detent 59to release the pawl which will then engage the driving member of theclutch which is entrained with the motor, thereby connecting it with thedriven member. Detent 59 is rocked clockwise to engage clutch 58 upondepression of the zero value key 56 or any one of the digit value keys5'! and, upon release of the depressed key, the detent will be urgedagainst the periphery of the clutch to engage the clutch pawl uponcompletion of the cycle to disengage the clutch. Clutch 58 must belimited to one cycle of operation upon depression of each multiplierkey. The action, however, of setting clutch 58 is so rapid that theoperator is usually unable to release the multiplier key before theclutch has completed its cycle. Therefore, an auxiliary detent 59 isspring urged into engagement with the periphery of clutch 58 uponmovement of detent 59 to engage the clutch.

The zero value key 56 and the one to nine value multiplier keys 5! havehorizontally disposed stems (Figs. 3 and 5) which are rotatably mountedat their rearward ends on a shaft 60 which extends across the machineand which is rotatably mounted in the side frames. Intermediate theirends, the key stems have depending link connection 5| with the forwardends of digit selection levers 62. The stem of zero key 56 is fast onshaft 60 and a forwardly extending arm, also fast on the shaft, hasdepending link connection with the forward end of a Zero selection lever64. Selection levers 62, 64 are mounted on shaft 65 which is journaledin the machine framing and said levers will be described only inconnection with the operation of clutch 58 as heretofore noted, thesetting means operable in conjunction with selection means during thefirst half cycle of the clutch has no cooperative relation with thedevices of the invention.

Upon depression of the zero key 56 or any one of the digit value keys51, the connected selection lever 64 or one of the levers 62respectively will be rocked in clockwise direction (Figs. 3 and 5),thereby raising the rear free end of the lever which movement operatesto engage clutch 58 in the following manner.

The free ends of the selection levers 62, 64 underlie the lower edge ofa bail 6'! which extends transversely of the machine. Rearwardlyextending arms of bail 61 are fixed on a shaft 58 which is rotatablymounted in the machine framing (Fig. 2) and extends outwardly from theleft side frame. Therefore, when a selection lever 62, 64 is rocked upondepression of a multiplier key, the free rear end of the lever willengage bail 61 and rock said bail and shaft 63 to which it is fixed incounterclockwise direction against the tension of a spring 51 attachedto the right end of the bail. Outwardly of the left side frame, a crank69 with diametrically disthe driven housing of clutch 58.

I9 toward the rear of the machine and rock detent 59 clockwise to engageclutch 58. At the same time, crank 69 will move link II toward the frontof the machine, thereby rocking detent 59 counterclockwise intoengagement with Crank 99, which will the periphery of clutch 58 andtensioning a spring H which comprises the yieldable connection of thelink with the detent. Therefore, if a multiplier key is held depresseduntil clutch 58 approaches full cycle position, 'detent 59 will be movedinwardly to a cut-away portion of'the clutch housing and thereby engagethe clutch pawl to disengage the clutch. Upon release: of the depressedmultiplier key, the connected one of the digit'value selection levers 62or the zero selection 84 will be moved to normal by a return spring 6211with which each lever is provided and the key will therefore be raisedto normal by the connecting linkage. Bail 61 will nowbe allowed movementto normal by spring 61' and thus crank 69 will be rocked clockwise tothe normal position shown in Fig. 2. Accordingly, link I9 will movedetent 59 to clutch disengaging position and link II will move detent 59to clutch engaging position. Clutch 58, however, will'remain disengagedas a slight step of movement of the clutch will bring its pawl intocontact with detent 59. H

An'upstanding crank 8| (Fig. 2) is fixed on a shaft 89 which isjournaled in the machine framing and which extends outwardly from theleft side frame. end of shaft 89 and has link connection 82 withTherefore, upon each cycle of operation of clutch 59, crank SI and shaft89 will be rocked clockwise and return. The setting operation will beperformed upon said clockwise movement of shaft 89 and upon returnmovement the storage magazine will be indexed thereby normallyinitiating the program of multiplication as follows:

An indexing pawl 86 (Fig. 5) is mounted on an arm 8! of ratchet wheel 84which is fixed on shaft 49. Pawl 85 engages a tooth of ratchet 94 andarm 8'! has link connection 98 with an upstanding crank 89 which isfixed on rock shaft 89. When shaft 89 is rocked clockwise by the settingoperation of clutch 58, pawl 86 will be As heretofore noted, countingpawl 54 is moved from a home position during the above described initialindexing operation of clutch 59. Pawl 54 (Fig. 7) is mounted in alongitudinal slot in a sleeve 99 which is rotatably and 'slidablymounted on shaft 49 to the right of magazine 49. A gear SM is integralwith sleeve 99 and meshes with a gear 92 which is fixed on a shaft 93journaled in the machine framing in parallel relation with magazine 48.To the left of magazine 49 and also rctatably and slidably mounted onshaft 49 is a second sleeve 94 having a gear 95 integral therewith. Gear95 meshes with. a g ar .5 Wh c Crank BI is fixed to the left' is fixedon shaft 93. .A torsion spring 97 has one end attached to shaft 93 andthe other end to the machine framing. Torsion spring 91 urges shaft 93and gears 92, 99 fixed thereon counterclockwise (Fig. 5). Gears 92, 96therefore urge gears. 9i, 95 and counting pawl 54, which are in. fixedrotationalrelationship, clockwise on shaft I 49. When the machine is ina normal position of rest gears 9!, 95 and pawl 54 are urged to the homeposition by spring 9? and are so located and restrainedjfrom furtherclockwise movement by a restraining pin 99 (Figs. 6 and 8) on the outerface of gear 95 engaging the fork end of an arm 99 of a bail I99.

Anescapement wheel I9I is fixed on shaft 49.

to the right of gear 95.. Fixed on the inner face of gear '95. adjacentwheel IM and therefore in fixed rotaryrelation with-pawl 54 is anescapement pallet I92 comprising'arms I92a and I 92b. When the parts arein normal home position, arm I920; is in the path of movement of one ofthe teeth of wheel I9I and is angularly displaced from saidtooth adistance equal to the angular displacement of counting pawl 54 from theslide 59 which is then in setting position. Therefore, when magazine 48has been moved, in the initial indexing operation, the distancesufficient to bring the set slide .59 into alignment with pawl 54, atooth of wheel I9I will engage arm I920 of pallet I92, thereby movingentrained gears 95, 96, 92, 9| and counting pawl 54 with magazine 48'during the remainder of the initial indexing movement. Upon subsequentindexing movements,wheel I9I, through pallet arm I92a, will be effectiveto move counting pawl 54 a full step.

of movement with magazine 48 unless said pawl has been returnedreversely to home position, in which instance the above-describedoperations will be repeated upon depression of a multiplier key.

Upon movement of gear 95 from home position and the consequent movementof pin 98 from engagement with thel'forked end of arm 99 of bail I99,thebailwill be operated to move clutch lever [I to clutch engagingposition, thereby initiating the. program of multiplication. Bail I99(Figs. 2 and. 6) extends to the outside of the left side frame and isthereat provided with an upstanding arm I99a having a forked free endwhich embraces a pin Ila on clutch lever II. Attached to and extendingoutwardly from arm I99a is a second upstanding arm I991). Arm I995 hastoggle spring connection I93 with a two position lever I94. ,When leverI94 is in the counterclockwise position shown in Fig. 2, toggle springI93 biases bail I99 counterclockwise. Normally, bail I99 is held in'central inactive position. by pin 99 engaging the fork 99 of the bail.However, when pin99 is removed from fork 99 during the initial indexingoperation, toggle spring I93 will be effective to rock bail I99counterclockwise and fork arm I991: will engage pin Ila, thereby rockingclutch lever II clockwise to engage clutch 9. If lever I94 is setclockwise from-the position shown in Fig. 2, toggle spring I93 will biasbail I99 in the reverse direc- Tahulcting means and setting ofsuperseding control means The tabulating keys I52 (Figs. 4, and 11) onefor each order, intermediate the extreme right and left carriage shiftpositions, are located at the front of carriage 2. The keys are springretracted and are provided with a latching plate I53 to hold a.depressed key against retraction. The plate is of well knownconstruction wherein the depression of a key operates to release anyother set keys. Each key I52 has a forwardly extending lug I52 at thelower end of its stem. A shift terminating arm I54 is pivotally mountedat its left end on the rear underside of the keyboard and a lug I54 ofthe arm is adapted to cooperate with the lug I52 of a depressed key I62to terminate a shift in the indicated position. If all of the tabulatingkeys are retracted and the carriage is to be shifted into the right endposition, a fixed lug I52a on the carriage rail 61 similar to lugs I52will cooperate with lug I54 to terminate the shift. Lug I52a is fixed inthe plane of the lug I52 of a depressed key I 52 and it will beunderstood that the operation is the same as hereinafter described inconnection with lugs I52. Upon depression of a key I52, its lug I52 islowered into the plane of the lug I54. Normally, lug I54 is forwardlyand out of the path of movement of the lug I52 of a depressed key I52and is ineffective to terminate a shift. However, upon initiation of aright carriage shift in conjunction with the setting of the controls ofthe invention, lug I54 is moved into the path of movement of the lug I52of a depressed key I52 to terminate the shift in the following manner.

An auxiliary clutch I55 (Figs. 4 and 12) which is constructed andoperates in accordance with shift clutches 4| and 4Ia. has commonmounting with the shift clutches on motor driven shaft 36 whichfurnishes the power for the clutches. A spring urged detent I56 operatesto engage and disengage clutch I55 in the manner described in connectionwith detents 42 of clutches 4I, 4m. Clutch !55 is engaged upondepression of a *ey I5! and operates to initiate a right carriage shiftonly if key I58 is simultaneously depressed. Clutch I55 may be furtherutilized to effect a clearing operation for the multiplier-quotientregister. This operation, however, would be incidental to the operationof the devices of the invention. It will be apparent, therefore, fromthe following description that key I58 could be provided with the wellknown overlapping arrangement whereby depression of key I58 wouldsimultaneously depress key I51 but permit the independent depression ofkey I51- Spring retracted key I51 is rockably mounted on ashaft I56 andthe stem of the key has a depending arm which has link connection with alever I51a, an upstanding arm of which is provided with a pin I66extending to the side thereof. A link I6I has a longitudinally extendingslot at its forward end and the forward end of the link is spring urgeddownwardly thereby normally engaging a shoulder at the rear of the slotwith pin I66. Link I6l extends toward the rear of the machine andthereat has connection with a depending arm I62 at the left end of abail 63 which is rockably mounted on shaft I56. Detent I56 of clutch I55is integral with the right end of bail I63. Upon depression, key I51will be rocked counterclockwise thereby moving link I61 toward the frontof the machine and rocking bail I63 and detent I56 clockwise to entoggleplate I68.

12 gage clutch I55. Near the end of the counterclockwise movement of keyI51, a rearwardly extending arm of lever I51a will engage and raise theforward end of link I6I thus removing the shoulder of its slot fromengagement with pin I66. Link I6! will now be allowed rearward movementby its slot should key I51 be held depressed. Spring urged detent I56will therefore be rocked to clutch disengaging position thus limitingthe operation of clutch I to a single cycle.

The driven member of clutch I55 is provided with a cam I55a. Adownwardly extending shift initiating arm I64 is fixed on the right endof a shaft I19 pivotally mounted in the machine framing and the arm isspring urged clockwise, thereby engaging a roller I thereon with camI55a. When clutch I55 is in full cycle position, roller I65 will engagethe low portion of cam I55a and upon rotation of the cam by clutch I55,arm I64 will be rocked counterclockwise until roller I 65 engages thehigh portion of the cam near the end of the cycle of the clutch. Asclutch I55 moves into full cycle position, arm I64 will be springrestored clockwise, thereby moving roller I65 from the high to the lowportion of the cam. The above described movement of shifting initiatingarm I64 will be ineffective unless key I58 has been depressed.

- Key I58 (Fig. 4) is fixed on shaft I59 adjacent key I51 (Figs. 1 and12) and will, upon depression, rock the shaft counterclockwise to effectcertain adjustment hereinafter described. Key I 58 has an upstanding armto which a cable I66 is fixed. The cable runs toward the rear of themachine through a suitable guide and at its rear has yieldable springconnection with a depending arm I61 which has pivotal mounting at itsupper end. The lower end of arm I61 has slot and pin connection with atoggle plate I68 which normally is held in clockwise position by atoggle spring I66 and is pivotally mounted at I68a on the right sideframe. A crank I69 is mounted on the right side frame forwardly of CrankI69 comprises a relatively short upstanding arm and an elongateddepending arm the free end of which comprises a toe I69. The upstandingarm of crank I69 has at its upper end link connection I10 with the rightend of arm I54 of the tabulating mechanism and the depending arm of thecrank has link connection I1I intermediate its end with toggle plateI68. Toggle plate I68 also has link connection I12 with an arm I13. ArmI13 is horizontally disposed and has pivotal mounting at its right endon the upper end of a crank arm I14a of the right link I14 of a toggleI14-I15. The left free end of arm I13 is adapted for engagement by a pinI64 z at the lower end of arm I64 but is normally out of the path ofmovement thereof. The left link I15 of the toggle has pivotal connectionat its left end with an arm of crank I16 which is spring biasedclockwise thereby normally holding toggle I14-I15 collapsed. A link I11has pivotal mounting at the point of connection of toggle links I14I15and at its left end link I11 has slot and pin mounting on the machineframe. Link I11 has an operating finger I11a which is adapted to engagea pin I46a on right shift initiating link I46 when toggle I14-I15 ismoved from collapsed to set position. Upon depression of key I58 cable I66 will be moved toward the front of the machine thereby rocking arm I61clockwise and connected toggle plate I68 counterclockwise in which po-13 sition the plate will be held by its toggle spring. Thecounterclockwise movement of toggle plate I66will move link I1I towardthe'front of the machine to rock crank I69 clockwise and will raise linkI12 thereby rocking the free end of arm I13 into the path of movement ofpin I64a of arm I 64. The clockwise movement of crank I69 will move linkI18 toward the rear of the machine thereby rocking arm I54 to move itslug I54 rearwardly and into the path of movement of the lug I52 of a settabulating key I52. It will be noted .that should the carriage be in aposition selected by depression of a tabulating key, the above describedadjustments will not be effected because a slight movement of the partswill engage lug I54 of arm I54 with the lug I52 of the set tabulatingkey thus preventing further movement of the parts. Therefore, uponoperation of clutch I55 and the rocking of shift initiating arm I64,pinl64a will pass idly above arm I13 and no carriage shift will beinitiated. The yieldable connection, however, at the rear of cable I66will permit depression of key I58 and the consequent rocking of shaft I59 to which it is fixed.

With the foregoing described adjustments effected, operation of clutchI55 and the attendant counterclockwise movement of arm I64 will beeffective to initiate a rightward carriage shift.

Upon counterclockwise movement of arm I64, pin

scribed in connection with the shifting mechanism. Finger I11a will holdlink I46 forwardly to maintain shift clutch 4Ia engaged until toggleI14I15 is broken upon which the shift will be terminated as follows:

When toggle I14I15 is set, a roller at the end of an arm I15a. of linkI15 will be moved into position adjacent the toe I69 of crank I 69 asshown in Fig. 4a. As the carriage approaches and is immediately adjacentthe position of a depressed tabulating key I52. the lug I52 of the keywill engage lug I54 of lever I54 thereby rocking the lever and movinglink I19 forwardly. The forward movement of link I18 will restore crankI69 counterclockwise and thereupon toe I69 will engage the roller at theend of arm I15a of toggle link I15 thereby moving the link clockwise tobreak the toggle I14I15. Upon collapse of toggle I14-I15 link I11 willbe moved from engagement with pin I46a thereby permitting rearwardmovement of link I46 and movement of detent 42 of right shift clutch 4Iato disengage the clutch upon completion of the shift into the positionindicated by the depressed tabulating key I52. Furthermore when crankI69 is restored, link I1I will move toggle plate I68 to normal therebyrestoring arm I61, key I58 through cable I66, link I12 and arm I13.Should key I58 be held depressed until the normalizing operations havebeen effected, the spring connection of cable I66 with arm I61 will betensioned and thus will restore the key upon release.

When shaft I59 (Figs. 4 and 12) is rocked counterclockwise upondepression of key I58, certain control devices of the invention are setsothat subsequent depression of a multiplier key 56, 51 will not resultin the aforedescribed initiation of a multiplying operation. upon theconsequent movement of pawl 54 from home position in the setting andindexing operation. Rather, the depression of a multiplier key willcause a single order shift of the carriage further toward the right fromthe position to which it has been tabulated and restraining means willbe effective to hold in abeyance the initiation of the multiplyingoperation.

Upon counterclockwise movement of shaft I59, a crank I18 (Fig. 12) fastthereon will move a link I88 rearwardly. The rear end of link I88 hasconnection with one arm of a bell crank I8I which is pivotally mountedon shaft I19 on whichshift initiating arm I64 (Fig. 4) is fixed.Therefore, upon rearward movement of link I89, bell crank I8I will berocked clockwise. The other arm of bell crank I 8| has link connectionI82 through a stud I8Ia with the rear arm of a lever I86 which isfulcrumed on an upstanding arm of a three armed crank I84. Clockwisemovement of crank I8I therefore, will lower link I82, thereby rockinglever I83 about its pivot on crank I84 to raise the forward free end ofthe lever to the rear of and into the path of movement of a pin on acrank I85a which is fixed on shaft I19.

Cam I551: which is operated by clutch I55 is providedwith a dwellextending from its low toward its high portion and will therefore not beeffective to rock shift initiating arm I64 (Fig. 4) during the firstportion of the cycle of clutch I 55. This arrangement is to insure thatthe aforedescribed adjustment of lever I83 is effectedbefore arm I64 isrocked. When arm I64 is rocked counterclockwise by cam I55a, shaft I19on which the arm is fixed will likewise be rocked and with it crank I85(Fig. 12) fixed thereon. The pin of crank I85a will therefore engage thefree end of lever I83 and rock the three arm crank I84 clockwise.

A depending arm of crank I84 is connected to the rear end of a forwardlyextending link I85 which at its forward end is attached to an upstandingcrank I86 which is fixed on a shaft I81 journaled in the machineframing, Therefore upon clockwise movement of crank I84, link I65 willbe moved forwardly thereby rocking crank I 86 and shaft I81counterclockwise. A crank I86 havinga pair of vertically disposed armsalso is fixed on shaft I 81 and the upper arm of the crank has pin andslot connection with a spring retractable slide I89. The lower arm ofcrank I 88 has an outwardly extending restraining pin I88a normallydisengaged from the forked end of arm 8911 (Figs. 6 and 12) which isintegral with bail I68 and which is of similar construction to forkedarm 99 also integral with the bail. Crank I88 fixed on shaft I81 will berocked counterclockwise therewith and will move slide I 89 forwardly andwill move its pin I88a into engagement with the forked end of arm 93athereby restraining bail I68 from movement to initiate the multiplyingoperation. Upon forward movement of slide I89, a latching bar I98 whichis pivotally mounted at its rear on shaft I81 will be spring urgedupwardly at its forward end thereby engaging a shoulder I99a thereofwith the downwardly turned forward end of slide I88. Latching bar I99now :will prevent retraction of slide I88 by its spring when shiftinitiating arm I64 is restored upon comis spring engaged to urge shaftI22 toward the right to its normal position. A pair of memberscomprising triggers I 23 and I 23a are fixed on shaft I22. When shaftI22 is in its normal right position, trigger I23 is effective to engagea lug on the detent Q2 of left shift clutch 4I when the shaft is rockedand trigger i23a located to the right of a lug of the detent 42' ofright shift clutch lla will be ineffective. Trigger I23 and shaft I22are rocked by a crank I2I (Figs. 2 and 12) splined on the shaft, by linkIII and arm 24 to effect a one decade left carriage shift in the programof multiplication fully disclosed in applicants aforesaid applicationSer. No. 205,304.

A rearwardly extending arm of crank I84 (Fig. 12) has pivotal connectionwith a vertically adjustable slide I 92 having slot and pin mounting.The upper end of slide I92 has a cam slot 92a which is engaged by a pinfixed to a plate I93 loose on shaft I22 and engaged by spring urgedcollar ISI. When slide I92 is in normal position cam slot I92a locatesplate I93 longitudinally on shaft I22 so that collar I9I spring urgedagainst plate I93 will locate shaft I22 in its normal rightwardposition. Upon clockwise movement of crank I34, slide I92 will belowered and cam slot I 92a will adjust plate I93, collar I9I, shaft I22and triggers I23, I231; to the left. Accordingly, when shaft I 22 isrocked trigger I23 now will be ineffective and trigger I23-a will beeffective to engage the lug of detent d2 of right shift clutch 4Iathereby engaging the clutch.

A cam 58a (Fig. 2) is mounted on the driven member of setting andindexing clutch 58. A depending arm I 99 is fixed on shaft I22 outwardlyof the left side frame and when shaft I22 is in its normal rightposition, a roller on the lower end of arm I94 is located inwardly fromthe plane of cam 58a. However, when shaft I22 is adjusted to the left,the roller of arm I94 will be moved into position to be engaged by cam58a when clutch 58 is operated thereby rocking arm I9 2, shaft I22 andtrigger I 23a to initiate a right carriage shift.

Operation The decimal marker Ia of the product register I is set betweenthe fifth and sixth order numeral wheels. This provides five decimalplaces and is the sum of the decimal places of the multiplicand and themultiplier with the largest number of decimal places and is the maximumnumber of decimal places required for the sum of the products.

The decimal marker I 9a for the counting register I9 is set between thethird and fourth order wheels and provides for three decimal placeswhich is the largest number of decimal places of any of the multipliers.The multiplicand 25125 is set in the first four orders of the keyboardand the decimal marker 6a is set between the second and third orders toprovide for two decimal places. The third position tabulating key 52' isdepressed, which number corresponds to the decimal setting of thecounting register I9; key 39 so it is to the left of the third position.

Upon simultaneous depression of keys I51, I58, the carriage will betabulated rightwardly to the third position and the control devices willbe adjusted: all as heretofore described. Then the multiplier keys 51'representative of the multiplier 1.123 including a decimal key I 95 (tobe described) will be sequentially depressed from higher to lowerorders. Upon depression of the I multiplier key. setting and indexingclutch 58 will be engaged. However, when pin 98 of gear 55 (Figs. 6 and8) is removed from forked arm in the indexing operation, toggle springI03 (Fig. 2) will be ineffective to initiate the multiplying operationas bail I00 will be held inactive by the superseding control of pinI880. (Figs. 6 and 12) engaging forked arm 99a. Alternatively, cam 58aof clutch 58 will rock and then release arm I94, shaft I22, triggerI23a, and detent 42 of right shift clutch 4Ia, thereby effecting a onedecade carriage shift to the right with the multiplier digit 1 stored instorage magazine 48. The carriage will now be in the fourth position andthe decimal key I95 is then depressed.

W'hen' latching bar I was raised from the position shown in Figs. 2 and12 to latch slide I89, it was moved into engagement with a toe on theunder side of the stem of key I95. Therefore, when decimal key I isdepressed, latching bar 00 will be moved to release slide I89 which willbe spring restored to normal. Slide I92 will therefore be lowered andshaft I22 assisted by the spring of collar I9I will be moved to theright, thereby reenabling trigger I23 of left shift clutch 4i and movingthe roller of arm I94 (Fig. 2) out of position to be engaged by cam 58a.At the same time crank I88 (Figs. 6 and 12) will be restoredclockwisethus removing its pin I88a from forked arm 99a. Pin 98 will have beenmoved from fork '39 in the indexing operation following the storage ofthe digit 1. loggle spring I03 (Fi 2) will therefore now be effective torock bail 5'53 and clutch lever I I to initiate the multiplyingoperation. It will be noted that the fork of arm 29a. is relatively longand therefore readjustment of shaft I22 and clutch triggers I23, I23awill' be efiected before bail I00 is released. The I, 2 and 3 multiplierkeys 51 will now be successively depressed and the multiplying operationwill be effected in accordance with the disclosure of applicantsapplication, Serial No. 205,304. It will be recalled that themultiplying operation was initiated upon depression of decimal key I95with the carriage in the fourth position. Therefore, the registration inproduct register I at the end of the first calculation will be 28.35575.

The carriage will now be returned to the third position for the secondcalculation upon depression of keys I51, I58. The multiplier keys I, 2,decimal" key I95, multiplier keys I and 2 will be successivelydepressed. The second calculation will therefore be started with thecarriage in the fifth position and the registration effected by thesecond calculation will be 306.03.

The carriage is then positioned by shift The carriage will again bereturned to the third position for the last calculation and multiplierkeys l, 2, 3, decimal key, and multiplier key I, will be successivelydepressed. The calculation will be started with the carriage in thesixth position and the registration effected will be 3108.275 with thetotal of 3442.66075 which is the sum of the three products.

It will be apparent that the devices of the invention may well beadapted for use with multiplying mechanism having multiplier storagedevices wherein the multiplier digits aregsuccessively stored butwherein the calculation is not initiated until the entire multiplier isstored. For example, successive depression of the digit keys for thewhole number of the multiplier could effect the decade shifting from thetabulated position, the shifting mechanism could be disabled upondepression of the decimal key and. then the digits of the decimal couldbe entered with the carriage located in the correct position for theinitiation of the calculation. Furthermore, the devices of the inventionare equally applicable in multiplying mechanism wherein right shift iseffected and the multiplier keys are depressed from lower to higherorders. In this application of the invention, the carriage positioncontrol means would effect left shift from the tabulated position priorto initiation of the calculation. It will be understood therefore thatthe invention is not to be restricted, except as necessitated by thespirit of. the appendedclaims.

I claim:

1. In a motor driven calculating machine havinng a shiftable registercarriage, means for ordinarily shifting said carriage, differentiallysettable multiplier storage devices, multiplier keys, and means operableto enter values successively into said storage devices upon sequentialdepression of a series of said multiplier keys; means for ordinarilylocating said carriage, comprising a normally disabled powertransmission train adjustable for operation in response to depression ofeach multiplier key to initiate an ordinal operation of said shiftingmeans, conditioning devices for adjusting said power transmission trainto operative position including manually operable control meanstherefor, a control key, and normalizing devices operable upondepression of said control key to disable said power transmission train.

2. In a motor driven calculating machine having a shiftable registercarriage, means for ordinally shifting said carriage, differentiallysettable multiplier storage devices, multiplier keys, and means operableto enter values successively into said storage devices upon sequentialdepression of a series of said multiplier keys; means for ordinallylocating said carriage, comprising shift control means operable to causesaid carriage shifting means to shift said carriage in a given directionto a selected ordinal position, a'normally disabled power transmissiontrain adjustable for operation in response to depression of eachmultiplier key to initiate an ordinal operation of said shifting meansin said given direction, conditioning devices for adjusting said powertransmission train to operative position, manually operable means forcausing operation of said shift control means and of said conditioningdevices, a control key, and normalizing devices operable uponvdepression of said control key to disable said power transmission train.

3. In a motor driven calculating machine having a shiftable registercarriage, means for ordi- 18 nally shifting said carriage,differentially set table multiplier storage devices, multiplier keys,and means operable to enter values successively into said storagedevices upon sequential depress sion of a series of said multiplierkeys; means for ordinally locating said carriage, comprising shiftcontrol means operable to cause said carriage shifting means to shiftsaid carriage in a given direction to a selected ordinal position, anormally disabled power transmission train adjustable for operation inresponse to depression of each multiplier key to initiate an ordinaloperation of said shifting means in said given direction, manuallyoperable means for initiating operation of said shift control means,conditioning devices operable in response to operation of said shiftcontrol means to adjust said power transmission train to operativeposition, a control key, and normalizin devices operable upon depressionof said control key to disable said power transmission train.

4. In a motor driven calculating machine having a shiftable registercarriage, means for ordinally shifting said carriage, differentiallysettable multiplier storage devices, multiplier keys, and means operableto enter values successively into said storage devices including asetting clutch operable upon depression of each of said multiplier keys;means for ordinally locating said carriage, comprising a normallydisabled power transmission train adjustable for operation by saidsetting clutch to initiate an ordinal operation of said shifting means,conditioning devices for adjusting said power transmission train tooperative position including manually operable control means therefor, acontrol key, and normalizing devices operable upon each depression ofsaid control key to disable said power transmission train.

5. In a motorrdriven calculating machine having a shiftable carriage, aproduct register on said carriage, differential actuators for saidregister means for ordinally shifting said carriage in a given oralternatively the opposite direction, differentially settable multiplierstorage devices, multiplier keys, means operable to enter valuessuccessively into said storage devices upon sequential depression of aseries of said multiplier keys concurrently with operation of saidactuators and said carriage shifting means, and multiplication controlmeans including said storage devices operable to control operation ofsaid actuators and of said carriage shifting means in said givendirection; means for ordinally locating said carriage, comprising anormally disabled power transmission train adjustable for operation inresponse to depression of each multiplier key to initiate an ordinaloperation of said shifting means in said opposite direction,conditioning devices for adjusting said power transmission train tooperative position including manually operable control means therefor, acontrol key, and normalizing devices operable upon depression of saidcontrol key to disable said power transmission train and to initiateoperation of said multiplication control means.

6. In a motor driven calculating machine having a shiftable carriage, aproduct register on said carriage, differential actuators for saidregister, means for ordinally shifting said carriage in a given oralternatively the opposite direction, differentially settable multiplierstorage devices,

multiplier keys, means operable to enter values successively into saidstorage devices upon sequential depression of a series of saidmultiplier keys concurrently with operation of said actuators and saidcarriage shifting means, and multiplication control means including saidstorage devices operable to control operation of said actuators and ofsaid carriage shifting means in said given direction; means forordinally locating said carriage, comprising shift control meansoperable to cause said carriage shifting meansto shift said carriage insaid opposite direction -to a selected ordinal position, a normallydisabled power transmission train adjustable for operation in responseto depression of each multiplier keyto initiate an ordinal operation ofsaid shifting means in said opposite direction, conditioning devices foradjusting said power transmission train to operative position, manuallyoperable means for causing operation of said shift control means and ofsaid conditioning devices, a control key, and normalizing devicesoperable upon depression of said control key to disable said powertransmission train and to initiate operation of said multiplicationcontrol means.

7. In a motor driven calculating machine having a shiftable carriage, aproduct register on said carriage, differential actuators for saidregister, means for ordinally shifting said carriage in a given oralternatively the opposite direction, difierentially settable multiplierstorage devices, multiplier keys, means operable to enter valuessuccessively into said storage devices upon sequential depression of aseries of said multiplier keys concurrently with operation of saidactuators and said carriage shifting means, multiplication control meansincluding said storage devices operable to control operation of saidactuators and of said carriage shifting means in said given direction,and means for initiating operation of said multiplication control meansupon depression of the first one of a series of said multiplier keys;means for ordinally locating said carriage, comprising shift controlmeans operable to cause said carriage shifting means to shift saidcarriage in said opposite direction to a selected ordinal position, anormally disabled power transmission train adjustable for operation inresponse to depression of each multiplier key to initiate an ordinaloperation of said shifting means in said opposite direction,conditioning devices for adjusting said power transmission train tooperative position and for disabling the initiating means for saidmultiplication control means, manually operable means for causingoperation of said shift control means and of said conditioning devices,a control key, and normalizing devices operable upon depression of saidcontrol key to disable said power transmission train and to causeinitiation of the operation of said multiplication control means.

8. The invention according to claim 7 wherein the normalizing devicesoperable upon depression of the control key to cause initiation ofoperation of the multiplication control means are operable to re-enablethe initiating means operable upon depression of said first multiplierkey.

9. In a motor driven calculating machine having a shiftable carriage, aproduct register on said carriage, differential actuators for saidregister, means for ordinally shifting said carriage in a given oralternatively the opposite direction, difierentially settable multiplierstorage devices, multiplier keys, means operable to enter valuessuccessively into said storage devices upon sequential depression of aseries of said multiplier keys concurrently with operation of saidactuators and said carriage shifting means, multiplication control meansincluding said storage devices operable to control operation of saidactuators and of said carriage shifting means in said given direction,and spring powered means operable in response to depression of the firstone of a series of said multiplier keys to initiate operation of saidmultiplication control means; means for ordinally locating saidcarriage, comprising shift control means operable to cause said carriageshifting means to shift said carriage in said opposite direction to aselected ordinal position, a normally disabled power transmission trainadjustable for operation in response to depression of each multiplierkey to initiate an ordinal operation of said shifting means in saidopposite direction, conditioning devices operable to adjust said powertransmission train to operative position and to restrain said springpowered means from operation, manually oper able means for causingoperation of said shift control means and of said conditioning devices,a control key, and normalizing means operable upon depression of saidcontrol key to disable said power transmission train and to release saidspring powered means.

10. In a motor driven calculating machine having a shiftable carriage, aproduct register on said carriage, differential actuators for saidregister, means for ordinally shifting said carriage in a given oralternatively the opposite direction, differentially settable multiplierstorage devices, multiplier keys, means operable to enter valuessuccessively into said storage devices upon sequential depression of aseries of said multiplier keys concurrently with operation of saidactuators and said carriage shifting means, and multiplication controlmeans including said storage devices operable to control operation ofsaid actuators and of said carriage shifting means in said givendirection; means for ordinally locating said carriage, comprising anordinal series of settable tabulating keys, a shift terminating memberadjustable to effective or ineffective position and operable uponmovement of said carriage into an ordinal position indicated by a settabulating key to terminate operation of said shifting means, a normallydisabled power transmission train adjustable for operation in responseto depression of each multiplier key to initiate an ordinal operation ofsaid shifting means in said opposite direction, conditioning devices forinitiating operation of said shifting means in said opposite direction,for adjusting said shift terminating member to effective position, andfor adjusting said power transmission train to operative position;manually operable means for causing operation of said conditioningdevices, means operable upon movement of said carriage into the ordinalposition of a set tabulating key to adjust said shift control member toineffective position, a control key, and normalizing devices operableupon depression of said control key to disable said power transmissiontrain and to initiate operation of said multiplication control means.

11. In a motor driven calculating machine :having a shiftable carriage,a product register on said carriage, differential actuators for saidregister, means for ordinally shifting said carriage in a given oralternativel the opposite direction, differentially settable multiplierstorage devices, multiplier keys, means operable to enter valuessuccessively into said storage devices upon sequential depression of aseries of said multiplier keys concurrently with the operation of saidactuators and of said carriageshifting means includingasetting clutchoperable upon-depression 21 of each of said multiplier keys, andmultiplication control means including said storage devices operable tocontrol operation of said actuators and of said carriage shifting meansin said given direction; means for ordinally locating said carriage,comprising shift control means operable to cause said carriage shiftingmeans to shift said carriage in said opposite direction to a selectedordinal position including an auxiliary clutch operable to initiate theoperation, 2. nor--' mally disabled power transmission train adjustableupon operation of said auxiliary clutch for operation by said settingclutch to initiate an ordinal operation of said shifting means in saidopposite direction, manually operable means for causing operation ofsaid shift control means, a control key, and normalizing devicesoperable upon depression of said control key to disable said powertransmission train and to initiate operation of said multiplicationcontrol means.

FREDERICK W. PFLEGER.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,915,037 Suter June 20, 1933 1,974,494 Kottmann Sept. 25,1934 2,141,597 Cunningham Dec. 27, 1938 2,382,661 Pott Aug. 14, 19452,399,917 Friden et a1 May 7, 1946 2,467,419 Avery Apr. 19, 19492,538,896 Britten, Jr. Jan. 23, 1951

